Averages

____________________ , mean and median are three different types of ____________________ . They can all be used to analyse ____________________ . When we talk about averages , we often mention ____________________ as well . It is not really an ____________________ but it tells us how the ____________________ is ____________________ out , which can be useful too .
The most common type of average is the ____________________ . It is calculated by ____________________ all the ____________________ and then ____________________ the ____________________ ____________________ by the ____________________ of ____________________ we have ____________________ . The great thing about it is that it uses all the ____________________ . But then it can be easily ____________________ if our set contains an ____________________ ____________________ or small number .
If we want to find out which item from a list occurs most frequently we are calculating the ____________________ . It is a great way of analysing ____________________ - ____________________ data . However , it should be remembered that we can have ____________________ ( two modes ) or ____________________ ( more than two modes ) sets of data , or sets ____________________ a mode altogether .
____________________ is the so called 'middle number' . In other words if we want to find the ____________________ , we need to ____________________ our set of data in ____________________ order and ____________________ the ____________________ value . That is easy if the data set is ____________________ . If we have an ____________________ set of data , we need to remember to first ____________________ the two ____________________ values and then ____________________ the ____________________ by ____________________ . This will give us the ____________________ . As opposed to ____________________ , median does not get affected by very ____________________ or large numbers but if our set of data is ____________________ , it may be time - consuming to find the ____________________ ( if all you can use is a piece of paper and a pen ) .